I like the look of the Duke 600 Fountain Pen I found on ebay. But I am not sure if the nib is good quality or not. I was thinking I could replace it with a Goulet nib if it will fit. Does anyone have any idea if this pen will take a #6 nib? I have contacted several different ebay sellers of this pen and they don't understand my question or they just don't answer. Any help would be appreciated! Thank you! Here is a pic: http://i1309.photobucket.com/albums/s630/HUANGCHAODUKE/1_zps808b2b69.jpg Here is a link to the pen on ebay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=251448244284&ssPageName=ADME:X:RTQ:US:1123 Thank you again for any help!